CECAA850 Posted February 14, 2018 Share Posted February 14, 2018 2 hours ago, Rudy81 said: Just amazing in my book. I have been playing with this stuff for years and have never seen that kind of relatively flat room response. That's cool. I've always wanted 4 subs, one on each wall, but never had the "room" for it. Once I read the Harman white paper, it made perfect sense as to why. Quote Link to comment Share on other sites More sharing options...
RoboKlipsch Posted February 14, 2018 Share Posted February 14, 2018 57 minutes ago, Rudy81 said: The REW software has two preset configurations. One puts the subs in the 4 room corners. The other puts the subs at the 4 wall mid-points. The two options are certainly way better in room interaction than putting them all in one location. I figured I had some time to kill and why not move those 200+ pound behemoths around my room. I ran frequency measurements and much to my surprise, the response was close to what REW predicted. I had also been reading that the subs should NOT be left on the floor for optimum performance....and that was correct also. Due to the configuration of my build, I can place the driver 4' in the air without placing them on any other surface. So, I played with the software for hours trying to make the response as flat as possible. I then configured the subs as indicated by the response. The results are amazing in my book. I get a very flat room response in LF without ANY EQ. Just amazing in my book. I have been playing with this stuff for years and have never seen that kind of relatively flat room response. I now have my subs at various heights and positions throughout the room and they sound really amazing. I plan on taking more measurements today for comparison. the harmon papers are the best baseline for starting points. nothing replaces lots of measurements i spent probably 200 hours measuring moving and fine tuning and learning my goal was to have every seat identical after a while new changes not only dont improve response but degrade it...thats when u know you are close my 3 couch seats even in a l shaped room are identical within a few db and response is flat no dips or peaks position is the hard part, after that setting delays on each sub and eq are the final steps to greatness i use what would be considered 2 minimarties and 2 martycubes. the big ones are ultimax18s, the cubes are legacy 15s with a strong midbass slam. couldnt be happier 👍 Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted February 14, 2018 Author Share Posted February 14, 2018 If you guys have a link to the Harman paper, please let me know. I would like to read it and compare to what I have learned from other sources concerning multiple sub setups. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 14, 2018 Share Posted February 14, 2018 1 hour ago, Rudy81 said: If you guys have a link to the Harman paper, please let me know. I would like to read it and compare to what I have learned from other sources concerning multiple sub setups. This is probably where other sources got their info from. https://www.harman.com/sites/default/files/multsubs_0.pdf 1 Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted February 15, 2018 Author Share Posted February 15, 2018 Thank you sir. Turns out I already had that article. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 15, 2018 Share Posted February 15, 2018 So summing this thread up. The best DIY subwoofer is 4 subwoofers. Quote Link to comment Share on other sites More sharing options...
nd-irish147 Posted February 25, 2018 Share Posted February 25, 2018 How would a full marty compare to a 18" wide tuba ht? Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted March 16, 2018 Share Posted March 16, 2018 On 2/14/2018 at 7:32 AM, Rudy81 said: I now have my subs at various heights and positions throughout the room and they sound really amazing. What are your thoughts after a few weeks of listening enjoyment? Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted March 16, 2018 Author Share Posted March 16, 2018 On 2/14/2018 at 9:02 PM, CECAA850 said: So summing this thread up. The best DIY subwoofer is 4 subwoofers. Turns out, that is exactly correct! Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted March 16, 2018 Author Share Posted March 16, 2018 On 2/24/2018 at 6:49 PM, nd-irish147 said: How would a full marty compare to a 18" wide tuba ht? I have not heard a tuba ht. I chose the Marty for ease of build and for the ability to customize the dimensions of the cabinet. Turns out my build worked out great for my layout. I have 4 rather large subs in the room and they are not as noticeable in size and aesthetics as one would think. Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted March 16, 2018 Author Share Posted March 16, 2018 3 hours ago, Khornukopia said: What are your thoughts after a few weeks of listening enjoyment? So far, I am still thrilled with the performance. Certainly in terms of pure output from the individual subs, but I am also very impressed with the system response having spread out the subs around the room in all 3 dimensions. Quote Link to comment Share on other sites More sharing options...
jason str Posted March 16, 2018 Share Posted March 16, 2018 On 2/24/2018 at 6:49 PM, nd-irish147 said: How would a full marty compare to a 18" wide tuba ht? The Tuba HT makes normal subs sound like children's toys. 1 Quote Link to comment Share on other sites More sharing options...
JustAuBy Posted March 16, 2018 Share Posted March 16, 2018 If you have access to a CNC machine, you can make the SKhorn i have attached in the link. I have the CAD file too somewhere. Do It! and make me one too while your at it. https://drive.google.com/open?id=11pAblNBq35gE_T1ikP69GKb1Q9y2ddjT https://data-bass.com/data?page=system&id=140 Quote Link to comment Share on other sites More sharing options...
JustAuBy Posted March 16, 2018 Share Posted March 16, 2018 Or..... The Othorn https://drive.google.com/open?id=1EuzI__3ICHB-yPHYs9Yqs6-eUuTdGgqq https://data-bass.com/data?page=system&id=81 Quote Link to comment Share on other sites More sharing options...
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